Dissidia 012 coldbird alternative?

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Me and a friend recently tried to play Dissidia 012 multiplayer (both using PCs) using Tunngle but we couldn't get it to work, as in, we can't see eachother in the lobby. I know that coldbird is currently down but I was wondering if people narrowed a way to play without it. Also sorry if this kind of question has been already answered before . If it's possible for someone to point me in the right direction I'd be more than grateful ^^